CN214210072U - Flow direction opposite bipolar membrane component, bipolar membrane filter element and water purifying equipment - Google Patents
Flow direction opposite bipolar membrane component, bipolar membrane filter element and water purifying equipment Download PDFInfo
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- CN214210072U CN214210072U CN202022302001.5U CN202022302001U CN214210072U CN 214210072 U CN214210072 U CN 214210072U CN 202022302001 U CN202022302001 U CN 202022302001U CN 214210072 U CN214210072 U CN 214210072U
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- bipolar membrane
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Abstract
The utility model discloses a flow direction opposite bipolar membrane subassembly, bipolar membrane filter core and water purification unit, including positive electrode, negative electrode, a plurality of bipolar membrane and two at least water conservancy diversion parts. The negative electrode is arranged opposite to the positive electrode; the bipolar membrane is disposed between the positive electrode and the negative electrode. The flow guide parts are arranged in the flow passages formed between the positive electrode and the bipolar membrane, between the negative electrode and the bipolar membrane and between the bipolar membrane and used for guiding water flows between adjacent flow passages to flow in opposite directions. The utility model discloses a bipolar membrane subassembly passes through the rivers between the adjacent runner of water conservancy diversion part guide and is opposite direction flow, guarantees that whole rivers ion between the adjacent runner is balanced to make between the bipolar membrane electrode whole electric current even, current efficiency is high, and the power consumption is little, is difficult to arouse the part and generates heat.
Description
Technical Field
The utility model relates to a water treatment technical field especially relates to a flow direction is opposite bipolar membrane subassembly, bipolar membrane filter core and water purification unit.
Background
With the development of science and technology and higher requirements of people on living quality, the water treatment technology provides clean and healthier drinking water for people. At present, the drinking water is generally treated by filtering through various filter elements to obtain drinking water meeting the requirements of people. The commonly used filter element at present comprises a PP cotton filter element, an active carbon filter element, a reverse osmosis filter element and the like.
The bipolar membrane filter element is a novel filter element and is composed of one or more pairs of electrodes and at least one or more bipolar membranes in the middle of the electrodes, and a flow passage is formed between the bipolar membranes for water to pass through. Self-cleaning regeneration can be realized by reversely electrifying the bipolar membrane filter element.
The existing bipolar membrane generally has the advantages that water enters from one end and exits from the other end, so that the current between electrodes of the bipolar membrane is overlarge due to the fact that the ion concentration of water is large at the water inlet end, the current between electrodes of the bipolar membrane is small due to the fact that the ion concentration of water is small at the water outlet end, the current efficiency is low, the energy consumption is large, and local heating is easy to achieve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flow direction opposite bipolar membrane subassembly, bipolar membrane filter core and water purification unit, guarantee that the inter-electrode electric current of bipolar membrane is balanced, current efficiency is high, and the power consumption is little, is difficult to arouse the local heating.
The utility model discloses a flow direction opposite bipolar membrane subassembly, including positive electrode, negative electrode, a plurality of bipolar membrane and two at least water conservancy diversion parts. The negative electrode is arranged opposite to the positive electrode; the bipolar membrane is disposed between the positive electrode and the negative electrode. The flow guide parts are arranged in the flow passages formed between the positive electrode and the bipolar membrane, between the negative electrode and the bipolar membrane and between the bipolar membrane and used for guiding water flows between adjacent flow passages to flow in opposite directions.
Optionally, the flow guide component is a flow guide plate; the guide plate is provided with a hollow guide channel, a first water through opening and a second water through opening which are respectively communicated with two ends of the guide channel; the first water through opening and the second water through opening are used for water inlet or water outlet.
Optionally, the first water passage port is connected with an external water inlet pipeline, the second water passage port is connected with an external water outlet pipeline, the second water passage port of the adjacent guide plate is connected with an external water inlet pipeline, and the first water passage port is connected with an external water outlet pipeline.
Optionally, the flow guide is U-shaped.
Optionally, the number of the bipolar membranes is 1-50.
Optionally, flow guiding structures are arranged in flow passages formed between the positive electrode and the bipolar membrane, between the negative electrode and the bipolar membrane, and between the bipolar membrane and the bipolar membrane.
Optionally, the flow guide is in a shape of "W".
Optionally, the flow guide is in a curved or bent shape.
The utility model also discloses a bipolar membrane filter core, including as above bipolar membrane subassembly.
The utility model also discloses a water purification unit, include as above bipolar membrane filter core.
The utility model discloses a bipolar membrane subassembly passes through the rivers between the adjacent runner of water conservancy diversion part guide and is opposite direction flow, guarantees that whole rivers ion between the adjacent runner is balanced to make between the bipolar membrane electrode whole electric current even, current efficiency is high, and the power consumption is little, is difficult to arouse the part and generates heat.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive faculty. In the drawings:
FIG. 1 is a schematic diagram of a bipolar membrane assembly according to an embodiment of the present invention;
FIG. 2 is another schematic view of a bipolar membrane assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a bipolar membrane cartridge according to an embodiment of the present invention for adsorbing ions;
FIG. 4 is a schematic diagram of the regeneration of a bipolar membrane cartridge according to an embodiment of the present invention;
FIG. 5 is a schematic block diagram of a bipolar membrane cartridge according to an embodiment of the present invention;
fig. 6 is a schematic block diagram of a water purifying apparatus according to an embodiment of the present invention.
Wherein, 1, a water purifying device; 2. a bipolar membrane cartridge; 3. a bipolar membrane module; 4. a positive electrode; 5. a negative electrode; 6. bipolar membrane; 7. a flow guide member; 71. a baffle; 711. a flow guide way; 712. a first water passage port; 713. a second water vent; 8. and a flow passage.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present invention may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implying any number of indicated technical features. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
The invention will be described in detail below with reference to the drawings and alternative embodiments.
As shown in fig. 1 and fig. 2, as an embodiment of the present invention, a bipolar membrane assembly 3 with opposite flow directions is disclosed, which comprises a positive electrode 4, a negative electrode 5, a plurality of bipolar membranes 6 and at least two flow guiding components. The negative electrode 5 is arranged opposite to the positive electrode 4; the bipolar membrane 6 is disposed between the positive electrode 4 and the negative electrode 5. The flow guide parts 7 are arranged in the flow passages 8 formed between the positive electrode 4 and the bipolar membrane 6, between the negative electrode 5 and the bipolar membrane 6, and between the bipolar membrane 6 and the bipolar membrane 6, and are used for guiding the water flow between the adjacent flow passages 8 to flow in opposite directions.
As shown in fig. 3, the bipolar membrane filter cartridge of the present invention comprises one or more pairs of electrodes, and at least one or more bipolar membranes between the electrodes; each bipolar membrane consists of a cation exchange membrane and an anion exchange membrane which are compounded together, the cation exchange membrane and the anion exchange membrane which form the bipolar membrane form a runner.
In the bipolar membrane filter element, in the desalination process, the anode membrane of the bipolar membrane faces the positive electrode, and raw water is desalinated in a flow channel formed between the two bipolar membranes, as shown in fig. 3. Anions in the raw water such as Cl < - > move towards the positive electrode to replace OH < - > in the anion exchange membrane on the left side, and OH < - > enters the flow channel; meanwhile, cations such as Na + in the raw water move towards the negative electrode direction to replace H + ions in the cation exchange membrane of the bipolar membrane on the right side, and the H + enters the flow channel; h + and OH-are subjected to neutralization reaction in the flow channel to generate water, so that the salt in the raw water is removed, and the pure water flows out from the tail end of the flow channel.
When desalination is carried out for a period of time, the bipolar membrane filter core needs to be subjected to reverse regeneration, and then the bipolar membrane filter core is reversely electrified to release ions in water adsorbed on the bipolar membrane. At this time, as shown in fig. 4, OH "and H + ions are generated in the interface layers of the cation membrane and the anion membrane of the bipolar membrane under the electric field, cations such as Na + inside the cation membrane of the bipolar membrane are replaced by the H + ions and move to the negative electrode, anions such as Cl" in the anion membrane of the bipolar membrane are replaced by OH "and move to the positive electrode, and Na + and Cl" enter the flow channel, so that the regeneration process of the bipolar membrane filter element is realized.
The bipolar membrane 6 generally has one end for water inlet and the other end for water outlet. The bipolar membrane 6 achieves the purpose of purifying water by adsorbing ions of charges, and one end of inlet water is high in ion concentration in water, and one end of outlet water is low in ion concentration in water. Therefore, the current between the electrodes of the bipolar membrane 6 at the water inlet end is overlarge, and the current between the electrodes of the bipolar membrane 6 at the water outlet end is smaller; when the preset water purification effect of the bipolar membrane component 3 is to be achieved, the voltage is increased according to the end with smaller current, the preset water purification effect can be achieved integrally, the current efficiency is lower, and the energy consumption is large. On the other hand, the excessively high current end causes local heat generation, and the bipolar membrane assembly 3 is easily burned out.
The utility model discloses a bipolar membrane subassembly 3 leads rivers between the adjacent runner 8 to be opposite direction through water conservancy diversion part 7 and flows, guarantees that whole rivers ion between the adjacent runner 8 is balanced to make the whole electric current even between the 6 electrodes of bipolar membrane, current efficiency is high, and it is little to consume energy, is difficult to arouse the part and generates heat.
Specifically, the flow guide component 7 is a flow guide plate 71; the guide plate 71 is provided with a hollow guide channel 711, a first water through port 712 and a second water through port 713 which are respectively communicated with two ends of the guide channel 711; the first water passage port 712 and the second water passage port 713 are used for water inlet or water outlet. For example, the first water passage port 712 of the current baffle 71 is used for water inlet, and the second water passage port 713 is used for water outlet; the second water passing port 713 of the adjacent baffle 71 is used for water inlet and the first water passing port 712 is used for water outlet, thereby realizing the water flow between the adjacent flow passages 8 in the opposite direction. For another example, the second water passage port 713 of the front baffle 71 is used for water inlet, and the first water passage port 712 is used for water outlet; the first water passing port 712 of the adjacent baffle 71 is used for water inlet and the second water passing port 713 is used for water outlet, so that the water flows between the adjacent flow passages 8 in opposite directions.
More specifically, the first water passage port 712 is connected to an external water inlet pipeline, the second water passage port 713 is connected to an external water outlet pipeline, the second water passage port 713 of another adjacent baffle 71 is connected to an external water inlet pipeline, and the first water passage port 712 is connected to an external water outlet pipeline.
Specifically, as shown in fig. 1, the flow guide channel 711 is in a "U" shape, so that the retention time of the water flow in the flow channel 8 can be increased, the contact area between the water flow and the bipolar membrane 6 is large, and the bipolar membrane 6 is fully utilized.
In another embodiment, the flow guide 711 may also be in a "W" shape (not shown). The flow guide 711 may also have a curved or bent shape (not shown).
Specifically, the number of the bipolar membranes 6 is 1-50, and the bipolar membrane component 3 has a proper overall volume and a good water purification effect.
More specifically, flow guiding structures are arranged in flow channels 8 formed between the positive electrode 4 and the bipolar membrane 6, between the negative electrode 5 and the bipolar membrane 6, and between the bipolar membrane 6 and the bipolar membrane 6.
As shown in fig. 5, as another embodiment of the present invention, a bipolar membrane cartridge is disclosed. The bipolar membrane cartridge 2 shown comprises a bipolar membrane assembly 3 as described above.
As shown in fig. 6, as another embodiment of the present invention, a water purifying apparatus 1 is disclosed. The water purification device comprises the bipolar membrane filter element 2.
The foregoing is a more detailed description of the present invention, taken in conjunction with specific alternative embodiments, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. A bipolar membrane assembly in reverse flow, comprising:
a positive electrode;
a negative electrode disposed opposite the positive electrode;
a plurality of bipolar membranes disposed between the positive and negative electrodes;
and at least two flow guide parts are arranged in the flow passages formed between the positive electrode and the bipolar membrane, between the negative electrode and the bipolar membrane and between the bipolar membrane and used for guiding water flows between adjacent flow passages to flow in opposite directions.
2. The bipolar membrane assembly of claim 1, wherein said flow directing component is a flow guide plate; the guide plate is provided with a hollow guide channel, a first water through opening and a second water through opening which are respectively communicated with two ends of the guide channel; the first water through opening and the second water through opening are used for water inlet or water outlet.
3. The bipolar membrane assembly of claim 2, wherein said first water passage port is connected to an external water inlet line, said second water passage port is connected to an external water outlet line, and a second water passage port of another adjacent one of said guide plates is connected to an external water inlet line, said first water passage port being connected to an external water outlet line.
4. The bipolar membrane assembly of claim 3 wherein said flow leader is "U" shaped.
5. The bipolar membrane assembly of any one of claims 1 to 4, wherein said number of bipolar membranes is 1-50.
6. The bipolar membrane assembly of any one of claims 1 to 4, wherein a flow guiding structure is disposed in the flow channel formed between said positive electrode and said bipolar membrane, between said negative electrode and said bipolar membrane, and between said bipolar membrane and said bipolar membrane.
7. The bipolar membrane assembly of claim 3 wherein said flow leader is "W" shaped.
8. The bipolar membrane assembly of claim 3, wherein said flow leaders are curved or bent in shape.
9. A bipolar membrane cartridge comprising a bipolar membrane assembly according to any one of claims 1 to 8.
10. A water purification apparatus, comprising the bipolar membrane cartridge of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022302001.5U CN214210072U (en) | 2020-10-16 | 2020-10-16 | Flow direction opposite bipolar membrane component, bipolar membrane filter element and water purifying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022302001.5U CN214210072U (en) | 2020-10-16 | 2020-10-16 | Flow direction opposite bipolar membrane component, bipolar membrane filter element and water purifying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214210072U true CN214210072U (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202022302001.5U Active CN214210072U (en) | 2020-10-16 | 2020-10-16 | Flow direction opposite bipolar membrane component, bipolar membrane filter element and water purifying equipment |
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| Country | Link |
|---|---|
| CN (1) | CN214210072U (en) |
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- 2020-10-16 CN CN202022302001.5U patent/CN214210072U/en active Active
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